USER MANUAL
Peplink Balance Series
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Appendix B. Routing under DHCP, Static IP, and PPPoE
The information in this appendix applies only to situations where the Peplink Balance
operates a WAN connection under DHCP, Static IP, or PPPoE.
B.1 Routing Via Network Address Translation (NAT)
When the Peplink Balance is operating under NAT mode, the source IP addresses of
outgoing IP packets are translated to the WAN IP address of the Peplink Balance. With
NAT, all LAN devices share the same WAN IP address to access the Internet (i.e., the
WAN IP address of the Peplink Balance).
Operating the Peplink Balance in NAT mode requires only one WAN (Internet) IP
address. In addition, operating in NAT mode also has security advantages because
LAN devices are hidden behind the Peplink Balance. They are not directly accessible
from the Internet and hence less vulnerable to attacks.
The following figure shows the packet flow in NAT mode:
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